Lobelia digitalifolia (Griseb.) Urb.

Lobelia digitalifolia (Griseb.) Urban, Symb. Ant. 1: 455. 1900
Tupa digitalifolia GriM.lj. Vl. Brit. W. Ind. 387. 1861.
Stem erect, suflrutesccnt, simple or branched (according to Urban), 3-4 m. high, coarse, up to 1 cm. in diameter at base, stoloniferous (according to Duss); whole plant smooth and glabrous, naked at base; cauline leaves few15, not crowded, sprcading-ascending, apparently sulx:oriaceous, shallowly and evenly crenate-dentate with 2-4 brownish caIlo.sc teeth i)cr cm., the blades 2.5-3.7 cm. broad by 18-21 cm. long, S-8 times as long as broad, narrowly elliptic or oblanceolate, acute at apex, acute to attenuate at base, the lower ones pctiolatc, the midvcin often arcuate at ajiex; inflorescence erect, pedunculate up to 15 cm., 13-33 (50) cm. long, 22-50(60-) flowered; pedicels widely spreading, often nearly at right angles to main axis, often flattened, straight except for the distal quarter (10-15 mm.) which is abruptly bent upward so that the long axis of the flower in anthesis is parallel to that of the inflorescence, the capsule incurved by further l>cnding of the pedicel; each pedicel with a pair of sul)oppo8ile linear entire bracteoles 3-10 mm. long, 5-20 mm. lielow hypanthium; flower-bracts 3-5 mm. wide by 25-30 mm. long, entire or with obscure callose teeth, linear-lanceolate, acute or blunt at tip, decurrent but not much fused with pedicel; flower up to 45 mm. long, including hypanthium; corolla redpurple (according to Urban), strongly falcate-recurved, the tube 20-24 mm. long, entire or fenestrate at base, the two upper lobes linear, decurved, the three lower ones shorter, connate about half their length ; filament-tube somewhat deflexed and exserted more than half its length, the filaments distinct about a third of their length; all five anthers whitetufted at tip; hypanthium in anthesis short-campanulate, becoming truly campanulate in fruit, higher than broad, 7-8 mm. across; capsule about two-thirds inferior, about 10-12 mm. long; calyx-lobes foliose, lanceolate, acute or blunt at tip, entire or obscurely callose-toothed, (2) 3-5 mm. wide at base, (10) 12-18 mm long; seeds ovoid-oblong, brown, minutely reticulate, about 0.8 mm. long. Type locawty: Dominica, Imray.
Pedicels 30-35 mm. long in fruit; filament-tube about 25
mm. long; anther-tube 5.0-5.5 mm. long; native of
Dominica. 686. L. digUalifolia var. digilalifolia.
Pedicels 40-65 mm. long in fruit ; filament-tube 28-32 mm.
long; anther-tube 7-8 mm. long; native of Guadeloupe. 68a. L. digitalifolia var. guadeloupensis.
68a. Lobelia digitalifolia var. guadeloupensis (Urban) ISIcVaugh, comb. nov.
Lobelia guadeloupensis Urban, Symb. Ant. 1: 454. 1900.
Leaf-blades toothed except in the proximal third, which is usually nearly entire; pedicels 40-65 mm. long in fruit; corolla about 38 mm. long, the two lobes next the dorsal fissure about 12 mm. long, the three others about 10 mm. long; filament-tube 28-32 mm. long; anther-tube 7-8 mm. long.
Type locality: Guadeloupe ("Hab. in Guadeloupe panim frequens et passim locis humidis v. aquaticis regionis, superioris 800-1300 m. alt., in sylvis primaevis circa Bains-Jaunes, Matelyane, Coul6e de la Ravine-£-Dejeuner, Mome Gouyavier").
DiSTRTBUTiON : Mountains of Guadeloupe.
68b. Lobelia digitalifolia var. digitalifolia McVaugh, var. nov.
Tupa digilalifolia Griseb. loc. cit.. as to type. Dorlmannia digilalifolia Kuntze, Rev. Gen. 972. 1891.
Leaf-blades toothed almost to the base; pedicels 30-35 mm. long in fruit; corolla about 30 (?) mm. long, the two lobes next the dorsal fissure about 9 mm. long, the three others about 7 (?) mm. long; filament-tube about 25 mm. long; anther-tube 5-5.5 mm. long.
Distribution: Mountains of Dominica.

Lobelia digitalifolia là loài thực vật có hoa trong họ Hoa chuông. Loài này được (Griseb.) Urb. mô tả khoa học đầu tiên năm 1899.